11. Rebooted with acpi_backlight=vendor (which had been my usual boot mode; symptoms noted in orginal report).
12. $ ls /sys/class/backlight > vendorbacklight This reports: intel_backlight toshiba 13. As root: ls -la /sys/class/backlight/intel_backlight/ > lslabacklight (attached) ** Attachment added: "lslabacklight" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1214148/+attachment/3778530/+files/lslabacklight -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1214148 Title: Intel video: Display backlight cannot be changed on Toshiba Portege Z935 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1214148/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
